A Conservative Parallel Iteration Scheme for Nonlinear Diffusion Equations on Unstructured Meshes

A Conservative Parallel Iteration Scheme for Nonlinear Diffusion Equations on Unstructured Meshes

Year:    2016

Communications in Computational Physics, Vol. 20 (2016), Iss. 5 : pp. 1405–1423

Abstract

In this paper, a conservative parallel iteration scheme is constructed to solve nonlinear diffusion equations on unstructured polygonal meshes. The design is based on two main ingredients: the first is that the parallelized domain decomposition is embedded into the nonlinear iteration; the second is that prediction and correction steps are applied at subdomain interfaces in the parallelized domain decomposition method. A new prediction approach is proposed to obtain an efficient conservative parallel finite volume scheme. The numerical experiments show that our parallel scheme is second-order accurate, unconditionally stable, conservative and has linear parallel speed-up.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/10.4208/cicp.230815.030616a

Communications in Computational Physics, Vol. 20 (2016), Iss. 5 : pp. 1405–1423

Published online:    2016-01

AMS Subject Headings:    Global Science Press

Copyright:    COPYRIGHT: © Global Science Press

Pages:    19

Keywords: